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Patent Searching and Data


Title:
BRAKE CYLINDER DEVICE AND DISC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/056940
Kind Code:
A1
Abstract:
Provided is a compact brake cylinder device configured in such a manner that the brake cylinder device does not cause an increase in the size of a device and can output an increased braking force from a brake output section which moves together with a rod. A rod (22) is provided so that the rod (22) can move inside a cylinder body (20) in the advance and retraction directions in the direction of the cylinder axis. A rod pressing spring (23) presses the rod (22) in the retraction direction. An actuator (24) is disposed at a position at which the actuator (24) overlaps the rod (22) in the direction of the cylinder axis, and the actuator (24) is adapted to rotate. A force boosting mechanism (25) changes the direction of the drive force of the actuator (24), the drive force acting in the rotational direction, into the rectilinear direction, moves the rod (22) in the advance direction against the pressing force of the rod pressing spring (23), boosts the drive force transmitted from the actuator (24), and causes the boosted force to act on the rod (22). A brake output section (21) moves together with the rod (22) and outputs a braking force when the rod (22) moves in the advance direction.

Inventors:
OHNO TOMOYA (JP)
NAKAMURA JYOICHI (JP)
Application Number:
PCT/JP2011/073916
Publication Date:
May 03, 2012
Filing Date:
October 18, 2011
Export Citation:
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Assignee:
NABTESCO CORP (JP)
OHNO TOMOYA (JP)
NAKAMURA JYOICHI (JP)
International Classes:
F16D65/18; B61H5/00; F16D55/224; F16D65/14; F16H25/12; F16H53/02
Foreign References:
JP2010174955A2010-08-12
JP2001280233A2001-10-10
JP2000145414A2000-05-26
JPH11336516A1999-12-07
JP2010286054A2010-12-24
JP2009287732A2009-12-10
Attorney, Agent or Firm:
ONEDEE IP PARTNERS (JP)
Patent business corporation Wang Dee IP partners (JP)
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Claims: